Tread-resurfacing device for wheels.



J. W. PEMBERION. 'TREAD RESURFACING DEVICE FOR WHEELS. APPLICATION FILED NOV. 21. I916.

1 E a I \\\\\\\\\w 1 13 I 13 a TJ V 1]. ,2 2]. L Patented Apr. 3, 1917 J OHN W. PEMBEBTON, 0F WHEEIJING, WEST VIRGINIA.

TREAD-RESURFACING DEVICE FOR WHEELS.

Specification of Letters Patent.

Patented Apr. 3, 1917-.

Application filed November 27, 1916. Serial No. 133,589.

To all whom it may concern:

Be it known that 1, JOHN V. PEMBERTON, a. citizen of the United States of America, and resident of Vi heeling,'county of Ohio, and State of West Virginia, have invented certain new and useful Improvements in Tread-Resurfacing Devices for Wheels, of which the following is a specification.

This invention relates broadly to wheelgrinding devices, and more specifically to a device for resurfacing worn car-wheels.

The primary object of the invention is to provide a simple and comparatively inexpensive device whereby the tread surfaces of worn car or locomotive wheels may be ground down to circumferentially trueform.

A further object is to provide a device of the character mentioned which is designed especially for use on mine-locomotive-wheels and which is adapted to correct'tread-surface irregularities while the car is in use,

thus not only avoiding the necessity of detaching the wheel, or, in the case of wheels having tires, obviating removal of such tires for grinding, but also avoiding the expense and loss of time incident tosuchremoval.

A still further object of the invention is to provide a device which is readily applicable to practically all of the various types of mine-locomotives now in general use and which is located in a pos'tion where it will not interfere with the operation of any moving parts of the locomotive mechanism.

With these and other important objects in view, the invention resides in the features of construction, arrangement of parts and combinations of elements which will hereinafter be fully described, reference being had to the accompanying drawings, in which- Figure 1 is a side elevation of the invention, illustrating the application thereof;

Fig. 2 is an enlarged view of the blockholding clamp and the supporting bar, said parts being shown partly in side elevation and partly in broken longitudinal section;

Fig. 3 is an under side elevation of the clamp; and- Fig. 4 is a transverse section of the invention taken centrally of the abrading block, and additionally illustrating means for grinding down the wheel flange.

Referring to said. drawings, in which like a block 10 of emery,

designating characters distinguish like parts throughout the several views 1 indicates supporting brackets which are mounted at a suitable height upon suitable stationary parts of the car or locomotive structure, as upon the opposite sand boxes 2. Resting upon said brackets are the opposite ends of a longitudinally disposed horizontal bar 3, said ends being attached to said brackcts by means of long upright bolts 4: which carry encircling spiral springs 5 between the upper face of said bar and washers 6 also carried by said bolts in abutting relation to nuts 7 mounted upon the upper ends of the latter.

i Mounted rigidly on the under side of said bar 3 at points over each wheel is a pair of blocks 8, said blocks being located on opposite sides of and equidistant from the vertical center line of the wheel. Said blocks, which are preferably composed of wood, have bolted to the opposite sides thereof the ends of a pair of longitudinally disposed flexible spring-steel clamping bars 9. Disposed between and gripped by said bars 9 is carborundnin, or other suitable abradant material, said block being of greater width than the wooden blocks 8 and consequently having said bar 9 flexed thereabout, as is clearly shown in Fig. 3.

The abrading block 10 is disposed in a position wherein its under face engages the circumferential tread surface of the wheel at the topmost portion thereof and at the point where, due to wear, a slight excess diameter is presented, as shown in exaggerated form at 11 in Fig. l. As is obvious, the said block is in contact with the wheel continuously during rotation of the latter, accomplishing its grinding function while the car or locomotive is in use. Inequalities or irregularities in the engaged surface of the wheel are readily passed over, since the springs 5 permit the bar 3 by which the block clamping device is carried to yield in an upward direction.

As is obvious, the blocks 10 may be lowered as they become worn by releasing the nuts '12 on the bolts 13 which secure the clamping bars 9 in place, such release permitting the ends of said bars to sprin outward to the positions indicated in dotted lines in Fig. 3. After adjustment of said blocks, said nuts are retightened.

When it is also desired to grind down the wheel flanges, a clamping device consisting of flexible clamping bars 9 for gripping an the wheel, a pair of oppositely facing longi- V tudinallv disposed flexible clamping mem- Copies of this patent'may be obtained for five cents each, by addressing the bers supported by said yieldable member, and an abradingblock gripped between said clamping members and pressed againstthe uppermost surface of the wheel.

2. A device for removing irregularities from the circumferential surfaces of car wheels,- comprising a yieldable supporting member disposed over the wheel, a pair of resilient bars disposed in opposing relation carried by said yieldable bar, an abrading block located between said resilient bars, and adjustable means for causing said resilient bars to assume clamping relation to said block. 7 V

3. A device for removing irregularities from the circumferential surfaces of car wheels, comprising a bar disposed horizontally over the wheel to be acted upon, means permitting said bar to yield with respect to said wheel, a pair of longitudinally disposed flexible clamping bars supported horizontally by said yieldable bar, and an abrading block disposed between said clamping bars intermediate the ends of the latter, said clamping bars yieldingly gripping and supporting said block against the topmost surface of the wheel.

4. A device for removing irregularities from the circumferential surfaces of car wheels, comprising a bar disposed longitudinally over the wheel to be acted upon, means permitting said bar to yield in a direction away from said Wheel, a pair of supporting blocks carried by said bar at opposite sides of a central vertical line passed through said wheel, a pair of longitudinally disposed substantially parallel resilient clamping members having their ends bolted to opposite sides of said blocks, and an abrading block gripped between said clamping members.

5. A device for removing irregularities from the circumferential surfaces of car wheels, comprising a bar disposed longitudinally over the wheel to be acted upon, means permitting said bar to yield in a direction away from said wheel, a pair of supporting blocks carried by said bar at opposite sides of a central vertical line passed through said wheel, a pair of longitudinally disposed substantially parallel resilient clamping members having their ends secured to said blocks, an abrading block disposed between said clamping members, and means for causing the latter to assume clamping supporting relation to said abrading block.

In testimony whereof, I afiix my signature in presence of two subscribing witnesses.

JOHN W. PEMBERTON.

Witnesses:

G. 0. SMITH, H. E. DUNLAP.

"Commissioner of Patents,

Washington, D. 0. 

